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Cambridge Audio Azur 651C Single-disc CD player (Silver)

Item # 779651CS

If you're looking for a player that can handle all kinds of discs, there are plenty of good utility players out...

If you're looking for a player that can handle all kinds of discs, there are plenty of good utility players out...

Item # 779651CS

Shop all Cambridge Audio CD Players

About the Cambridge Audio Azur 651C

Dave Bar

A true CD specialist

If you're looking for a player that can handle all kinds of discs, there are plenty of good utility players out there to meet your needs. But if you want to experience your music CDs with ear-grabbing clarity and toe-tapping rhythm, Cambridge Audio created the Azur 651C just for you. Its singular purpose: extracting the best sound possible from your CD library. It combines the latest in circuit design, carefully selected internal components, and precision construction to deliver superlative performance that's sure to please the most discerning listeners.

A true CD specialist

If you're looking for a player that can handle all kinds of discs, there are plenty of good utility players out there to meet your needs. But if you want to experience your music CDs with ear-grabbing clarity and toe-tapping rhythm, Cambridge Audio created the Azur 651C just for you. Its singular purpose: extracting the best sound possible from your CD library. It combines the latest in circuit design, carefully selected internal components, and precision construction to deliver superlative performance that's sure to please the most discerning listeners.

Cambridge Audio Azur 651C front view

Thoughtfully engineered for music lovers

From its dual-layer damped feet to its thick, brushed-aluminum faceplate, the 651C's sturdy chassis was designed from the ground up to resist vibrations that can adversely affect sound. A high-quality toroidal transformer delivers a constant stream of clean, low-distortion current. You also get a precision, custom-designed CD transport and laser pickup with the ability to pull every last detail from your discs. Cambridge even included two of the latest Wolfson WM8742 DACs (one for each channel) in a dual-differential configuration that rejects noise to provide stunningly lifelike music reproduction. Words can't adequately describe how the 651C sounds, but one quick listen will tell you everything you need to know!


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Product highlights:

  • plays CDs, CD-Rs and CD-RWs
  • twin Wolfson WM8742 DACs in a dual differential configuration to reject noise and distortion
  • proprietary Cambridge Audio S3 Custom CD Servo™ drive mechanism provides maximum data retrieval with minimal jitter
  • all printed circuit boards use double-sided, surface mounted components for ultra-short signal paths and optimum sound quality
  • audiophile-grade toroidal transformer for ultra-low noise and distortion
  • selectable digital filter with three settings to suit personal listening preferences
  • wraparound casework design with thick brushed aluminum front panel and dual layer damped feet for enhanced resonance control
  • 1 pair RCA analog audio outputs
  • 1 coaxial digital audio output
  • 1 optical digital audio output
  • remote control
  • detachable power cable
  • weight: 10.6 lbs.
  • 16-15/16"W x 3-3/8"H x 14"D
  • warranty: 2 years
  • MFR # CAMB651CSL

What's in the box:

  • Single-disc CD player
  • 6' AC power cord
  • IR remote control (RC-651A/C)
  • 3 "AAA" batteries
  • User Manual (Eng/Fre/Spa)
  • Quick Start Guide (Eng/Fre/Spa)

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More details on the Cambridge Audio Azur 651C

Stacey B.

Features & specs

General
Disc Capacity N/A
CD Transport Only No
Disc Exchange N/A
Track Programming 30
Random Play Yes
Direct Track Access Remote
Direct Disc Access N/A
Networking Features
Network Music Streaming ---
Ethernet Port ---
Wi-Fi ---
Remote Included
Parts Warranty 2 Years
Labor Warranty 2 Years
Compatibility
CD-R Playback Yes
CD-RW Playback Yes
Stereo SACD Playback N
Specifications
CD Frequency Response 20-20k Hz
Signal to Noise Ratio 115 dB
SACD Frequency Response Not Compatible
SACD Dynamic Range ---
SACD THD ---
Inputs
Digital Optical Input
Digital Coaxial Input
USB Type-A Input
USB Type-B Input
Outputs
Analog RCA Output Yes
Analog XLR Output No
Digital Optical Output Yes
Digital Coaxial Output Yes
Headphone Output No

Product Research

Disc Compatibility
Audio Features
Controls
Connections
Specifications

Disc Compatibility

Single Disc CD Player: The Cambridge Audio Azur 651C single disc compact disc player has been designed to play CD-Audio, CD-Text, recordable CD (CD-R) and re-writable CD (CD-RW) type discs.

CD-DA Format Only: The Cambridge Audio Azur 651C CD player can play only discs recorded in the CD-DA format designed for music reproduction. Do not attempt to play a disc containing other data, such as MP3, WMA, or AAC on this unit.

Audio Features

CD Transport: The Azur 651C uses Cambridge Audio's legendary custom made audio-only, dedicated CD transport that has been tweaked even further using techniques derived from the 740 series. This well-proven transport guarantees incredible rigidity and the CD drawer itself has been designed to offer a smooth, high-end feel.

S3 Custom CD Servo Drive: Cambridge Audio's CD-only S3 Custom CD Servo employs a custom designed chipset and the latest double-sided surface-mount technology for ultra short signal paths with freedom from wire links. Circuits and software have been meticulously designed, so the S3 can dynamically adjust focusing, tracking, and output level of the laser in real-time, allowing for maximum retrieval of the digital information and jitter minimization. This is all made possible by the implementation of a powerful ARM7 processor and complemented by a highly accurate master clock oscillator and carefully designed impedance-matched clock buffering scheme.

Twin Wolfson WM8742 DACs (Digital to Analogue Converters): Twin Wolfson WM8742 DACs (24-bit/192kHz) deliver a significant performance upgrade over the 651C's award-winning predecessor and are implemented in a dual differential configuration (each channel has its own DAC to process information). A sophisticated Two-Pole Dual Differential Double Virtual Earth Balanced Bessel filter configuration rejects virtually all noise and distortion present in the DACs and filters them to produce an unprecedented level of performance.

Twin Digital-to-Analog Conversion System: The all-new twin digital-to-analog conversion system feature a selectable digital filter with 3 settings to suit your own listening preferences and of course your own system.

  • Steep Roll-Off Filter: The Steep roll-off filter exhibits strong attenuation of aliasing images outside the pass band (i.e. above 22.05kHz) at the expense of a little pre and post-ringing in the time domain.
  • Linear Phase Filter: The Linear phase filter uniquely features 'constant group delay' which delays all audio signals at all frequencies by the same amount meaning all audio is fully time-coherent at the output.
  • Minimum Phase Filter: Minimum phase meanwhile does not feature constant group delay but rather the coefficients have been optimized without feed-forward so that the impulse response exhibits no pre-ringing in the time domain.

Audiophile Grade Toroidal Transformer: Unlike most CD players, who use cheap laminate type transformers, the Cambridge Audio Azur 651C uses an audiophile grade toroidal transformer offering minimal electro magnetic interference and delivering superior audio performance.

Double-Sided Surface Mount Technology: All PCBs and DAC stages feature double sided surface mount technology, eliminating wire links and giving ultra short signal paths.

Polypropylene Capacitors: Low inductance resistors and polypropylene signal capacitors are used for superior audio performance.

Wrap-Around Casework Design: A wrap-around casework design with substantially thick brushed aluminum front panel, and dual layer damped feet, gives enhanced resonance control.

Standby Circuit: This innovative new circuitry design allows compact disc player to consume less than 1 watt of power when in Standby, but itself remains totally isolated and non-detrimental to the sound quality when the CD player is in operation. 

Controls

DFSTN Display: To ensure simple operation, a high contrast reverse black DFSTN (Double Film Super Twisted Nematic) display offers excellent feedback of the 651C's playback features, which now include CD-text support. On inserting a disc, the CD player will take a few seconds to read the Table of Contents (TOC) information from the disc. The display will then show the number of tracks on the CD and the total length of the CD. If the CD incorporates CD-text, the name of the album will scroll once (the number of tracks remains stationary throughout). Once playback of an individual track begins, the track number, total number of tracks, and playtime will be displayed. On a CD containing CD-text, the track name will scroll once.

Power On/Off: The 651C compact disc player's main power on/off switch is located on the rear-panel. Once the CD player's rear-panel main power switch has been turned On, you can switch the 651C on/off using the front-panel Standby/On button.

Front-Panel Controls: The Azur 651C uses Cambridge Audio compact disc player offers the following front-panel controls - Standby/On, Open/Close tray, Play/Pause, Stop, and Skip/Scan.

Auto Play Setting: The Cambridge Audio Azur 651C can automatically start playback of a disc inserted into its drawer without the unit's "Play" button being pressed.

Playback Functions: The 651C compact disc player offers Repeat, Random, and Program playback controls.

  • Repeat: You can repeat a specific track or an entire disc.
  • Random: You can play all the tracks on a disc in random order.
  • Program: You can program up to 30 tracks on a disc to play in a specific order.

IR Remote Control: The 651C compact disc player is supplied with an Azur Navigator remote control that operates both this CD player and Cambridge Audio Azur-series amplifiers. The Azur 651AC Navigator remote control can also control the basic functions of Apple devices, such as Apple TV and Apple's iPod/iPhone/iPad when docked in a Cambridge Audio or Apple dock (sold separately).

Note: The remote operates off of three "AAA" batteries (supplied).

Auto Power Down: If desired, the 651C can shut itself down if not used for a period of time. Power down after an inactive period (no disk playback or any functions of the player used) of 5, 10 or 15 minutes can be selected.

Connections

Analog Audio Outputs: The Cambridge Audio Azur 651C single disc compact disc player is fitted with gold-plated stereo analog audio outputs (RCA) to connect to your analog stereo receiver.

Digital Audio Outputs: The Cambridge Audio Azur 651C CD player is also fitted with two digital audio outputs. One optical (toslink) digital audio output and one coaxial (RCA) digital audio output. These digital outputs let you connect the player to your digital receiver.

IR Emitter Input: The 651C features a IR Emitter input (3.5mm) which allows modulated IR commands from multi-room systems or IR repeater system to be received by the CD player.

Control Bus Input/Output: The 651C features a Control Bus Input & Output (RCA), which allows un-modulated commands from multi-room systems or other components to be received by the player and loop out to another unit.

Detachable AC Power Cord: The Cambridge Audio 651C operates off of standard household AC current using the supplied detachable 6' AC power cord.

Specifications

D/A Converters: Dual Wolfson WM8742 24-bit/192kHz DACs

Analog Filter: 2-Pole Dual Differential Bessel Double Virtual Earth Balanced

Frequency Response: 20 Hz to 20,000 Hz (+/- 0.1 dB)

Total Harmonic Distortion:

  • @ 1 kHz (0 dbBFs): < 0.003%
  • @ 1 kHz (-10 dBFs): < 0.005%
  • @ 20 kHz (0 dBFs): < 0.002%

IMD (19/20kHz) 0 dBFs: < 0.005%

Linearity @ -90dBFs: +/- 9.5 dB

Clock Deviation: +/- 20 ppm

Stopband Rejection (>24kHz): >90dB

Signal-to-Noise Ratio: 115 dB

Total Correlated Jitter: < 140 pS

Crosstalk:

  • @ 1 kHz: < -100 dB
  • @ 20 kHz: < -99 dB

Output Impedance: < 50 ohms

Power Consumption:

  • Max Power: 25 watts
  • Standby Power: <1W

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